It looks pretty straightforward (though some of the questions are quite personal). For a household with one person, it looks like you have 8 pages of questions to fill out. This goes up by 4 pages for each extra person. There's also an end page to add visitors at the address at the time of the census.

I was not too bothered about the Census form, having left it to my wife, until I saw question 17 raised by you guys and looked, which made me laugh.

And then I noticed that my wife had filled in it as Person 1 - and so I was Person 2! Unforgivable.

And then I noticed my wife had filled in her identity as English and not British! And she said that she would have selected European rather than British if she had the choice. Mortifying... [face_British_flag] For Britannia!